Units recovery methods in compositional data analysis
Natural Resources Research
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Abstract
Compositional data carry relative information. Hence, their statistical analysis has to be performed on coordinates with respect to a log-ratio basis. Frequently, the modeler is required to back-transform the estimates obtained with the modeling to have them in the original units such as euros, kg or mg/liter. Approaches for recovering original units need to be formally introduced and its properties explored. Here, we formulate and analyze the properties of two procedures: a simple approach consisting of adding a residual part to the composition and an approach based on the use of an auxiliary variable. Both procedures are illustrated using a geochemical data set where the original units are recovered when spatial models are applied.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Units recovery methods in compositional data analysis |
| Series title | Natural Resources Research |
| DOI | 10.1007/s11053-020-09659-7 |
| Volume | 30 |
| Publication Date | March 24, 2020 |
| Year Published | 2021 |
| Language | English |
| Publisher | Springer |
| Contributing office(s) | Eastern Energy Resources Science Center |
| Description | 14 p. |
| First page | 3045 |
| Last page | 3058 |
| Google Analytic Metrics | Metrics page |